Physics JAMB

A carpenter on top of a roof of 20.0m high dropped a hammer of mass 1.5kg and it fell directly to the ground. the kinetic energy of the hammer just before hitting the ground is? [g = 10 ms−²]

A. 600J
B. 150J
C. 300J
D. 450J

Correct Answer:

Option C – 300J

Explanation

K.E just before hitting the ground
= P.E at the maximum height (conservation of mechanical energy)
K.E = P.E = mgh = 1.5 x 10 x 20
= 300 J

Sunday

Share
Published by
Sunday
Tags: physics

Recent Posts

List of Universities Offering Veterinary Medicine in Nigeria

Veterinary medicine is the branch of medicine that deals with the prevention, diagnosis, and treatment…

3 months ago

List of Universities Offering Anthropology in Nigeria

Anthropology is the scientific study of human beings and their cultures. It encompasses a wide…

3 months ago

List of Universities Offering Sociology in Nigeria

Sociology is the scientific study of human society, culture, and behavior. It examines the social…

3 months ago

List of Universities Offering Social Work in Nigeria

Social Work is a profession dedicated to helping individuals, families, and communities to cope with…

3 months ago

List of Universities Offering Religious Studies in Nigeria

Religious studies is an academic discipline that explores the beliefs, practices, and history of various…

3 months ago

List of Universities Offering Public Administration in Nigeria

Public administration is the field of study and practice that focuses on the organization and…

3 months ago